NSTEPS  Number Steps
Starting from point (0,0) on a plane, we have written all nonnegative integers 0, 1, 2,... as shown in the figure. For example, 1, 2, and 3 has been written at points (1,1), (2,0), and (3, 1) respectively and this pattern has continued.
You are to write a program that reads the coordinates of a point (x, y), and writes the number (if any) that has been written at that point. (x, y) coordinates in the input are in the range 0...10000.
Input
The first line of the input is N, the number of test cases for this problem. In each of the N following lines, there is x, and y representing the coordinates (x, y) of a point.
Output
For each point in the input, write the number written at that point or write No Number if there is none.
Example
Input: 3 4 2 6 6 3 4 Output: 6 12 No Number
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mockingjay:
20140318 08:55:08
got ac in my first go........... 

mockingjay:
20140318 08:55:03
got ac in my first go........... 

ezeuz the mind:
20140206 06:52:36
LOL... solve it...


ezeuz the mind:
20140206 06:40:57
Duh... Pretty sure mine is right. but got WA.


yvn:
20140111 17:55:24
help me out m gettng rite output but runtime error wats dat?? 

Prashant Kumar:
20131218 20:27:34
i get the logic, but getting wa , why? 

Ankit Jain:
20131209 23:17:54
ac in 1 go...yayyy 

Ashish Mishra:
20131127 09:24:55
wrong answer bt working in ideone :(


Shashank Gupta:
20131110 06:34:46
Only 17 lines of C...I was forgetting return 0 so I thought I did something wrong. :P 

Arpit Uppal:
20130828 15:44:25
damn easy.. my 50th classical on spoj :) 
Added by:  Camilo Andrés Varela León 
Date:  20061125 
Time limit:  1.159s 
Source limit:  50000B 
Memory limit:  1536MB 
Cluster:  Cube (Intel G860) 
Languages:  All except: ERL JSRHINO NODEJS PERL6 VB.NET 
Resource:  Asia  Tehran 2000 